What results when nitrogen dioxide and
hydrocarbons react in the presence of sunlight?
a. photochemical smog
b. industrial smog
c. a thermal inversion
d. depletions of the ozone layer
e. any of these
Answer: a
You might also like to view...
Which of the following statements about meristems is false?
A. Meristems contain a mixture of differentiated and undifferentiated cells. B. Meristems consist of cells that repeatedly undergo mitosis. C. Meristems are found at the tips of stems. D. Meristems are found at the tips of roots. E. Growth only occurs at meristems and not in other regions of the plant body.
The empiric risk to a family member of an affected individual developing a disorder caused by a multifactorial trait
A) decreases with severity of the disorder. B) increases with fewer affected family members. C) decreases in larger families. D) increases with increasing relatedness to affected individuals.
Engelmann’s investigation to determine the effective
wavelengths of light in photosynthesis depended on a photosynthetic alga’s a. use of CO2. b. release of O2. c. use of H2O. d. use of ATP. e. production of carbohydrate.
Which is a characteristic shared between green algae and plants?
a. a waxy cuticle b. multicellular gametangia c. chlorophylls a and b in plastids d. stomata in the surface of leaves e. stomata in the surface of stems